When "scanning" a coin to detect changes
Bochiman
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as the "big one" announcement says that PCGS will do, to detect doctoring since the last time it was seen/scanned, will it be able to tell the difference between any natural toning, even in the slab, over time, or not?
I know coins don't tone MUCH once slabbed, particularly if in a very stable environment, but folks that have SHQs and a few others, have seen them get slightly toned. So, would that be detected as NT or AT?
What about a coin that was scanned and slabbed and then cracked, put into a dansco or something, and, over time, toned. Will the new "science" be able to tell the difference between the types of toning?
I know coins don't tone MUCH once slabbed, particularly if in a very stable environment, but folks that have SHQs and a few others, have seen them get slightly toned. So, would that be detected as NT or AT?
What about a coin that was scanned and slabbed and then cracked, put into a dansco or something, and, over time, toned. Will the new "science" be able to tell the difference between the types of toning?
I've been told I tolerate fools poorly...that may explain things if I have a problem with you. Current ebay items - Nothing at the moment
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Would this also make the graders a little more biased if they see a major difference in a before and after picture even though it did naturally tone?
Any appreciable toning is noted on the visual comparison by the grader when the images pop up.
The name is LEE!
<< <i>I think the time difference will determine; coin doctors speed up the toning. Sending in coins that have not had the time to tone will be very evident
Metal types, coins, and environment can all make a difference. I agree that "overnight" is way to quick, but some coins may tone more than others in 6, 12, 24 months.
I hope I read the announcement wrong then, because as I read it, it sounded like the scanning device will be used to detect doctoring, to include toning. I'm all for detecting actual doctoring. Not so much for detecting natural toning and declaring it "different" and therefore doctored (kind of like NT coins getting GENUINED because someone isn't sure...or it is different than they think it should be)
I've been told I tolerate fools poorly...that may explain things if I have a problem with you. Current ebay items - Nothing at the moment
The digital imaging acts as a flag to indicate a resubmission, whether raw or slabbed.
I do not know how it would address putty though as it seems to me that putty on a coins surface would cause a different digital map.
The name is LEE!
Looks like the images come up and since it is "the same coin", the finalizer sees both "earlier" and "now" pics of the coin. So, if it is toned, it get "AT'ed".
I think that there better be guidelines or there will be even more upset folks as coins CAN AND DO tone, naturally, even in holders.
I've been told I tolerate fools poorly...that may explain things if I have a problem with you. Current ebay items - Nothing at the moment
<< <i>I can't imagine a slight tone after a few years would garner a body bag or genuine designation. JMHO Shag >>
Hope not......until I see how they handle things, though, with their recent reliance on "QT" and "GENUINE" on many coins, I am a bit skeptical.
I've been told I tolerate fools poorly...that may explain things if I have a problem with you. Current ebay items - Nothing at the moment
Correct. The new submission will be scanned and the data gathered will be compared to previously mapped coins. It's the same as fingerprint matching. The software doesn't look for differences between two coins. It looks for similarities, and determines the probability that they are the same coin based on the similarities.
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